head to head · open source
fastapi vs mocker-api
fastapi has 104,566 GitHub stars, 10,179 forks, 78 open issues and last shipped yesterday. mocker-api has 501 stars, 65 forks, 27 open issues and last shipped 7 months ago. fastapi leads on adoption by 20,771% (104,566 vs 501 stars). fastapi is written in Python under MIT; mocker-api is written in TypeScript under MIT. fastapi has attracted 10% as many forks as stars, mocker-api 13%. fastapi was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| fastapi | mocker-api | |
|---|---|---|
| GitHub stars | ★ 105K | ★ 501 |
| License | MIT | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-11-02 | 2026-04-21 |
| Forks | ⑂ 10K | ⑂ 65 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick fastapi if
- You weight community size — 105K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick mocker-api if
- You want the mocker-api feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and mocker-api fits your workflow better
About fastapi
FastAPI framework, high performance, easy to learn, fast to code, ready for production Documentation : Source Code : FastAPI is a modern, fast (high performance), web framework for building APIs with Python based on standard Python type hints. The key features are: Fast : Very high performance, on par with NodeJS and Go (thanks to Starlette and Pydantic). One of the fastest Python frameworks available. Fast to code : Increase the speed to develop features by about 200% to 300%. Fewer bugs : Reduce about 40% of human (developer) induced errors. Intuitive : Great editor support. Completion everywhere. Less time…
read the full fastapi overview →
About mocker-api
Using my app is also a way to support me:
read the full mocker-api overview →
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Frequently asked questions
Is fastapi or mocker-api more popular?
fastapi has 104,566 GitHub stars and mocker-api has 501. fastapi has the larger community by that measure.
Are fastapi and mocker-api free?
Both are open source. fastapi is licensed under MIT and mocker-api under MIT. Neither carries a licence fee.
What is the difference between fastapi and mocker-api?
fastapi is written in Python and mocker-api in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, fastapi or mocker-api?
Choose fastapi if you want the larger community (104,566 stars) or its MIT licence terms. Choose mocker-api if its feature set, stack or MIT licence fits better. Both are self-hostable.